IT Tips & Guides, Hamilton365

Practical IT advice for small businesses and IT professionals, written by Jamie Hamilton, founder of Hamilton365 and a senior Microsoft 365 specialist with 25+ years of enterprise IT experience.

• Why Organisations Still Running On-Premises Exchange Need to Act Now, Exchange Server SE Explained
• What Happens to Your M365 Accounts When Staff Leave?
• Guest Access in Entra ID, The Invisible Security Risk in Most M365 Tenants
• Shared Mailboxes, Distribution Lists, and M365 Groups, What's the Difference?
• What Is Exchange Online Protection and Is It Enough on Its Own?
• DMARC Is Set to 'None', So What? (More Than You Think)
• How to Tell If Someone Is Spoofing Your Domain Right Now
• Business Email Compromise, How Attackers Get In and How M365 Can Stop Them
• SPF, DKIM, DMARC, Explained for Business Owners (Not Just IT People)
• What Does a Microsoft 365 Health Check Actually Cover?
• The 5 Things Hamilton365 Checks First When Taking On a New M365 Tenant
• Why Your MSP Might Not Be the Right Fit for After-Hours M365 Emergencies
• Microsoft Secure Score, What It Is, What's a Good Number, and How to Improve Yours
• Your M365 Tenant After a Staff Member Leaves Unexpectedly, What to Do in the First 24 Hours
• End of Financial Year IT Checklist for M365 Admins
• Microsoft Entra Backup and Recovery (Preview): A Built-In Safety Net for Identity
• Microsoft Entra Tenant Governance (Preview): Visibility and Control Across Your Tenant Landscape
• Why Is My Computer So Slow? 7 Common Causes and How to Fix Them
• What Is DMARC and Why Your Brisbane Business Needs It
• Microsoft 365 Security Checklist for Small Businesses
• Does Your Small Business Need Managed IT Support?